The Company


PSE Kinsale Energy Limited, (formerly Marathon Oil Ireland Limited), produced natural gas from its facilities off the Old Head of Kinsale since 1978, up to Cessation of Production in July 2020. The company was acquired by PETRONAS in April 2009 and operated the Kinsale Head, Ballycotton and Seven Heads Gas Fields in the Celtic Sea.


PETRONAS (Petroliam Nasional Berhad) is Malaysia’s fully integrated oil and gas multinational ranked among the largest corporations on FORTUNE Global 500®. Established in 1974, PETRONAS now has a presence in more than 65 countries and operates among the top oil and gas companies in the world. Steadily driving new solutions and pushing boundaries, we add value to oil and gas resources in a manner that carefully balances commercial, environmental and social considerations.